Smartphone talet and e-readers should have an automatic bedtime mode that stops them distrupting peoples sleep, says a leading doctror. Proffesor Paul Gringras
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Pertanyaan
Smartphone talet and e-readers should have an automatic "bedtime mode" that stops them distrupting peoples sleep, says a leading doctror.
Proffesor Paul Gringras argued the setting should filter out the blue light that delays the body clock and keeps people awake later into the evening. The doctor, from Evelina Choldres Hospital in London, said every new model was " Bluer and brighter". He said manufacturers needed to show more "responsibilty".
As it gets darker in the evening, the body starts to produce the sleep hormone melatonin - which helps people nod off. Certain wavelenghts of light, those at the blue-green end of the spectrum, can disrupt the system.
Proffesor Gringras was part of study, published in Frontiers in Public Health, analysis the light "emitted" by devices. It concluded there was a clear trend for new devices to be bigger, brighter, have higher levels of contrast and emit more blue light. The professor of children sleep medicine told the BBC News website: "That is great for use in the day. but awful for use at night".
"There is converging data to say if you are in front ofone of these devicesat night-time it could prevent you falling asleep by an extra hour".
He said some sleep-aware apps had already been desighned to reduce blue-green light emission. And that a bedtime mode could automatically filter out the blue as software such as flux already does. He said there needed to be "more responsibilty from manufacturers" and the " key is to automate it".
Professor Gringras added : "It is not good enough to say do less and accept this is the world we live in, they are fun devices but we do need some protection on what they do at night-time".
PERTANYAANYA
1. The Passage mainly discusses a topic on
a. sleep disorder and its cure
b.problems with new electronic gadgets
c.electronic gadgets that help people fall asleep
d.blue-green light found in electronic devices
e. new technology that can help reduce sleep distruption
2. The word "emitted" in line 8 in passage means ?
a.shaded
b.triggered
c.produced
d.blocked
e.reflected
jawab, beserta alasannya
Proffesor Paul Gringras argued the setting should filter out the blue light that delays the body clock and keeps people awake later into the evening. The doctor, from Evelina Choldres Hospital in London, said every new model was " Bluer and brighter". He said manufacturers needed to show more "responsibilty".
As it gets darker in the evening, the body starts to produce the sleep hormone melatonin - which helps people nod off. Certain wavelenghts of light, those at the blue-green end of the spectrum, can disrupt the system.
Proffesor Gringras was part of study, published in Frontiers in Public Health, analysis the light "emitted" by devices. It concluded there was a clear trend for new devices to be bigger, brighter, have higher levels of contrast and emit more blue light. The professor of children sleep medicine told the BBC News website: "That is great for use in the day. but awful for use at night".
"There is converging data to say if you are in front ofone of these devicesat night-time it could prevent you falling asleep by an extra hour".
He said some sleep-aware apps had already been desighned to reduce blue-green light emission. And that a bedtime mode could automatically filter out the blue as software such as flux already does. He said there needed to be "more responsibilty from manufacturers" and the " key is to automate it".
Professor Gringras added : "It is not good enough to say do less and accept this is the world we live in, they are fun devices but we do need some protection on what they do at night-time".
PERTANYAANYA
1. The Passage mainly discusses a topic on
a. sleep disorder and its cure
b.problems with new electronic gadgets
c.electronic gadgets that help people fall asleep
d.blue-green light found in electronic devices
e. new technology that can help reduce sleep distruption
2. The word "emitted" in line 8 in passage means ?
a.shaded
b.triggered
c.produced
d.blocked
e.reflected
jawab, beserta alasannya
1 Jawaban
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1. Jawaban VoiceOfDusk
1) Jawabannya D. Blue-green light found in electronic devices, karena teks di atas menjelaskan bahwa Prof. tsb menemukan cahaya hijau biru yang berbahaya bagi kesehatan.
2) Jawabannya C. Produced, karena kata "emitted" di baris ke 8 berarti "dipancarkan" yang memiliki arti sama dengan produced = dihasilkan.